Foldable paper box



' .BB'ILW 1 Aug. 1 1932.

10mm rnrnn m Filed April 3. 1-931 Z SheetS-Sheet 1 Aug. 16, 1932. w RKREBS 1,871,706

FOLDABLE PAPER Box Filed April 5, 1951 2 Sheets-Sheet 2 1 Patented Aug.16, 1932 ranges PATENT. OFFIC WILLIAM RrKR-EBS, F BALTEEOBE, MARYLANDI'OLDABLE Application filed April 8,

This invention relates to folding boxes and haaspecial reference to afolding paper box. One important object of the invention is to providean improved single piece blank from which a complete box and cover canbe folded. A second important object of the invention is to provide animproved box folded from such a blank, the blank being so arranged as topermit a portion of the blank to be folded in one position as a coverand in a second posi tion as a display flap.

With the above and other objects in view as will be hereinafterapparent, the invention consists in general of certain novel details ofconstruction and combinations of parts hereinafter fully described,illustrated in the accompanying drawings and specifically claimed.

In the accompanying drawings like characters of reference indicate likeparts in the several views, and:

Figure 1 is a perspective view of the box open and ready for closin aFigure 2 is a view in re uced scale of the blank from which the box-isfolded.

Figure 3 is a vertical section throughthe closed box from front to rear.a

Figure 4c is a perspective view of the box arranged in display position.1

Figure 5 is a rear view of the box arranged as in Figure 4..

Figure 6 is a lon itudinal vertical section through the closed oxlooking towards the front.

In forming this box a suitable sheet of pa r like material such as millboard, straw board or the like is cut and scored produce a. blank havinga rectangular bottom portion 10. At each end of this bottom is s rectumgular end. flap l1 defined from the hotly 10 by a crease or score line12. These flap e):- tend the full width of the bottom 10. Sin larly afront flap 13 and rear flap M are defined from the bottom 10 by the foldlines 15. see flaps 13 and 14: extend the full length 1 rnr'nn BOX 1931.Serial no. 527,469.

bottom and the flaps 11, 13, and 14 are all of the same width. In thecorners between the end flaps -11 and front flap 13 are square cornerflaps 16 defined from the fia s 11 and 13 by scored fold lines 17 andeach aving a diagonal fold line 18 scored therein. Tabs 19 of the samelongitudinal dimensions as the flaps to which they are attached extendfrom the free edges of the flaps 11 and 13 and are defined therefrom byscored-fold lines 20. A 3

cover portion 21 extends from. the free edge of the rear flap 14 and isdefined therefrom by a scoredfold line 22. This cover is of sub--stantially the same size as the bottom and is divided into equal forwardand rear porw tions by central scored fold lines 23 extending inwardlyfrom the end edges of the cover and having their inner ends connected bya semi-- circular slit 24 forming a tab 25. Carried by the front edge ofthe cover is a front cover flap as 26 defined from the cover by a foldline 27. A rear flap portion 28 extends from the rear edge of each endflap 11 and is defined therefrom by a scored fold line 29. These rearflaps are separated from the rear flaps 14. and in cover 21 by slits 30.Locking slits 31 are used so that these flaps 28 may be detachablyconnected in setting up the box. I

The box is formed by folding the front and end flaps vertically upwardswith respect to F the bottom 10, the corner flaps 16 being doubled onthe fold lines 18 to permit this. The rear iiaps 28 then are foldedtoward each other and interlocked. The tabs 19 are fold- I ed inwardly.Finally the back flap 1 is folded vertically upward, the cover foldedforward and the front cover flap bent down and inserted in the box.

Should it be desired to use the box cover as a display device theauxiliary rear flaps are disconnected and brought together behind themain rear flap 14 and the cover doubled on its central fold lines tocause the tab 25 to project upwardly, the :tront cover so flap beingbrought into position against the front face of the main rear flap l4.

lhere has thus been provided a simple and efficient device of the kinddescribed and for the purpose specified.

It is obvious that minor changes may be made in the form andconstruction of the invention without departing from the material spiritthereof. It is not, therefore, desired to confine the invention to theexact form herein shown and described, but it is desired to include allsuch as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. A blank for folding boxes consisting of a single sheet of materialcut and scored to rovide a rectangular bottom portion, end,

ront and main rear flaps extending from the respective edges of thebottom and defined therefrom by fold lines, square corner portions inthe corners between the end and front flaps and defined therefrom byfold lines, tabs on the free edges of the front and end flaps, a coverportion extending from the free edge of the rear flap and definedtherefrom by a fold line and having a front cover flap extending fromthe free edge of the cover and defined therefrom by a fold line, saidcover being divided into forward and rear portions by fold linesextending in- .wardly from the end edges of the cover and having theirinner ends connected by a semicircular slit, and auxiliary rear flapsextending from the rear edges of the end flaps and defined therefrom byfold lines, said auxiliary end flaps being separated from the main endflap an icover by slits and having coopgrating locking slits adjacenttheir rear en s.

2. A box formed from a blank consisting of a single sheet of materialcut and scored to provide a rectangular bottom portion, end, front andmain rear flaps extending from the respective edges of the bottom anddefined therefrom by fold lines, square corner portions in the cornersbetween the end andfront flaps an defined therefrom by fold lines, tabson t e free edges of the front and end flaps, a cover portion extendingfrom the free edge of the main rear flap and defined therefrom by a foldline and having a front cover flap extending from the free edge of :hecover and defined therefrom by a fold line, said cover being dividedinto forward 7 and rear portions by fold lines extending inwardly fromthe end edges of the cover and having their inner ends connected by asemicircul or slit, and auxiliary rear flaps extendin from the rearedges of the end flaps and de ned therefrom by fold lines, saidauxiliary end flaps being separated from the main end fiapsand cover byslits and having cooperating locking. slits adjacent their rear ends,the front, main rear and end flaps be-

